topic Re: CAN FD 8Mbps not working in MPC5xxx

CAN FD 8Mbps not working

yalamandadosaky — Mon, 13 Nov 2017 09:47:11 GMT

Hi, I am using S32ds power pc v1.2 and MPC5748G EVB,I have successfully transmitted with CAN FD 1Mbps, 4Mbps but 8Mbps is not working. I have tried different baud rate settings

My baud rate settings are

.bitrate_cbt =

{

.propseg = 0,

.phaseseg1 = 1,

.phaseseg2 = 1,

.preDivider= 0,

.rJumbpwidth = 1

}

I have enabled TDC and offset value changed from 1 to 10 but still it didn't worked.

Can anyone help me to is there any problem with these settings or give me an idea how to resolve it.

Re: CAN FD 8Mbps not working

PetrS — Mon, 13 Nov 2017 10:24:28 GMT

Hi,

see this thread, https://community.nxp.com/message/958035

BR, Petr

Re: CAN FD 8Mbps not working

yalamandadosaky — Mon, 13 Nov 2017 12:13:54 GMT

Hi PetrS‌, Through Component inspector(processor Expert) I am unable to change the PE clock frequency to more than 40Mhz.

Is there any other way to select the more than 40Mhz clock frequency.

Thanks

Re: CAN FD 8Mbps not working

PetrS — Mon, 13 Nov 2017 13:02:35 GMT

checking a MPC5748G DS/RM I see max FlexCAN PEclock could be 40Mhz. Thus max bitrate is 5Mhz.

BR, Petr